鉴定一种类似于癌症干细胞的亚种群,该亚种群促进HCC转移
Chunyuan Yang1, Yang Li1,2, Zhaohai Wang3
1Institute of Systems Biomedicine, Department of Pathology, Center of Basic Medical Research, Institute of Medical Innovation and Research, School of Basic Medical Sciences, Peking-Tsinghua Center for Life Sciences, Peking University Third Hospital, Peking University, Beijing 100191, China.
JHEP reports : innovation in hepatology
|April 17, 2025
概括
这项研究确定了肝癌中转移促进癌症干细胞 (CSC),这些干细胞驱动瘤扩散和免疫逃避. 针对这些CSC及其ICAM1通路相互作用,为肝细胞癌 (HCC) 提供了新的治疗策略.
科学领域:
- 在瘤学瘤学.
- 癌症干细胞生物学
- 免疫学 免疫学 免疫学
背景情况:
- 癌症干细胞 (CSCs) 是已知的瘤形成的驱动因素.
- 肝细胞癌在促进瘤转移中的作用,特别是在肝细胞癌 (HCC) 中,尚不清楚.
- 识别涉及转移的特定CSC亚群对于开发向疗法至关重要.
研究的目的:
- 识别和表征促进HCC转移的CSC类细胞.
- 研究这些CSC类细胞对瘤侵入性和免疫抑制有所贡献的机制.
- 探索向CSC-免疫细胞相互作用的潜力,以治疗HCC.
主要方法:
- 来自19个HCC样本的单细胞RNA测序数据的分析,以确定CSC类子群.
- 在九个临床队伍中,生物信息和实验验证确定了CSC类细胞的干细胞和侵入性.
- 空间转录学,基因共同表达分析和免疫组织化学,以研究瘤微环境中的CSC类细胞相互作用.
- 使用信号通路阻塞的功能测试来评估治疗潜力.
主要成果:
- 在HCC中发现了促进转移的CSC样细胞的亚群,与预后不佳有关.
- 这些细胞表现出高表达的上皮细胞-介质细胞过渡基因,并在侵略性瘤和转移性焦点中得到丰富.
- 类似于CSC的细胞通过ICAM1信号通路诱导M2巨细胞极化和T细胞耗尽来促进免疫抑制.
- 在CSC类细胞中降低ICAM1的调节逆转了这些免疫抑制作用,并增强了抗瘤免疫力.
结论:
- 在HCC中发现了一种新的转移促进的CSC亚群.
- 这些CSC通过增强侵入性和通过ICAM1通路创造免疫抑制微环境,有助于HCC的进展.
- 针对CSC-免疫细胞相互作用,特别是通过ICAM1,为HCC提供了一个有希望的治疗策略.
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